Firebase Test Lab and Android Studio

This guide describes how to modify instrumented tests in Android Studio
for use with Test Lab. For instructions on using
Test Lab from the Android Studio UI to create a test matrix, run instrumented
tests, and view test results, see
Run your tests with Firebase Test Lab.

Capture screenshots

Create tests using Espresso Test Recorder

The Espresso Test Recorder tool lets you create UI tests for your app without
writing any test code. You can record your interactions with a device and add
assertions to verify UI elements in particular snapshots of your app. Espresso
Test Recorder then takes the saved recording and automatically generates a
corresponding Espresso UI test that you can run to test your app in Test Lab.

Modify instrumented test behavior for Test Lab

Test Lab provides a system variable that you can add to your instrumented
tests so that you can cause them to behave differently when you run them in
Test Lab than when you run them on your own test device or emulator.

The following code example reads a system property, firebase.test.lab, and
sets a string, testLabSetting to true if the test is running in Test Lab.
Then, it uses the value of this string to control whether additional statements
are executed: